In the nationwide campaign to improve municipal infrastructure, the Middlesex Water Company is pulling its weight. Just last September, the company wrapped up the latest project in a 20-year program to rehabilitate water mains, service lines and hydrants throughout areas of New Jersey where it provides water services.In South Amboy, the company spent some $4 million to clean and line 11,900 linear feet of 6- to 8-inch water main, enlarge another 9,000 feet of main from 4 to 8 inches, and replace 31 hydrant assemblies and 475 water service lines.The project, called RENEW, is meant to bring aging water lines
